Static RAM Vs Dynamic RAM, Which is better?
RAM or random access memory is an important component in determining the performance of your system. There are two types of Random Access Memory (RAM) static RAM and dynamic RAM and each has its own advantages and disadvantages compared to the other. Here is the complete guide what is the Difference between static RAM and dynamic RAM, Which one is better SRAM or DRAM and Why DRAM Needed to be refreshed thousands of times?
Compare static RAM Vs dynamic RAM
The key difference between the two is the technology that is used for holding data. Due to this key difference, other differences arise too. SRAM makes use of latches in order to store data (transistor circuit), whereas DRAM uses capacitors for storing bits in the form of charge. SRAM uses normal high-speed CMOS technology for the construction, whereas DRAM uses Special DRAM processes for achieving optimized high density. Dynamic RAMs have a simple internal structure in comparison to SRAMs.
What is SRAM?
SRAM or Static RAM is a semiconductor memory that utilizes Bistable latching circuitry to store each bit. This type of RAM stores data using the six transistor memory cells. Static RAM is mostly used as a cache memory for the processor (CPU).
SRAM stores data for as long as power is supplied in the system. It is much faster than DRAM which needs to be refreshed every once in a while.
Here are the benefits of using SRAM:
- SRAM is faster than DRAM which means it is faster in operation.
- SRAM can be used to create a speed-sensitive cache.
- SRAM only has medium power consumption.
- SRAM has a shorter cycle time since it does not require pausing between accesses.
Here are the drawbacks of using SRAM:
- SRAM is more expensive than DRAM.
- You can lose data if your SRAM is not powered.
- SRAM does not offer to refresh programs.
- SRAM has a low storage capacity.
- SRAM has a more complex design compared to DRAM.
- SRAM reduces memory density.
- Takes up much more space than DRAMs
What is DRAM?
DRAM or Dynamic RAM is widely used as a computer’s main memory. This type of RAM is made up of a transistor and a capacitor within an integrated circuit. Data bits are stored in the capacitor.
Transistors always leak a bit which also means that the capacitors slowly discharge — in turn, information stored in a DRAM tends to drain. This reason is why DRAM needs to be refreshed every once in a while to retain data. By “refreshing” a DRAM, it means giving it a new electronic charge.
Here are the benefits of DRAM:
- DRAM is more affordable than SRAM.
- DRAM has a higher storage capacity which enables you to create a larger RAM space system.
- DRAM offers a simple structure.
- DRAM utilizes logic and circuitry which makes the memory module simpler to set up and use.
Here are the drawbacks of using DRAM:
- DRAM is slower than SRAM.
- It will take you time to access data or information.
- DRAM consumes more power compared to SRAM.
Source https://www.storagepartsdirect.com/spd-blog/network-setup-101-sram-vs-dram-which-is-better/
